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III IIIIIIIIIIIIIIII • 5TATE OT COLOMDO <br /> DIVISION OF MINERALS AND GEOLOGY <br /> of <br /> Department of Natural Resources <br /> 111 t Sherman St., Room 215 7"7 <br /> Denver,Colorado 802036- <br /> Phone:(3031 2-810 67 <br /> FAX:1311.{I 872-8106 <br /> DEPARTMENT OF <br /> January 9, 1998 NATURAL <br /> RESOURCES <br /> Mr. Richard Weber <br /> Roy Romer <br /> Knight Piesold LLC Guvemor <br /> 1050 Seventeenth Street, Suite 500 lames S.Lochhead <br /> Denver, CO 80265-0500 becwiyeDirector <br /> Michael B.Long <br /> RE: Modified SPLP Test Results, Sleeping Giant Project, Northwestern Colorado Division Director <br /> Dear Mr. Weber, <br /> The Division of Minerals and Geology(DMG)has reviewed your December 19, 1997 letter to us regarding the <br /> above cited test results and their application to Permit#M-83-052, Joker Mine. Attached is the technical review <br /> done by our staff chemist Harry Posey, in which DMG's concerns are described in detail. Prior to making comment <br /> on the possibility of backfilling the Joker Mine site with ore treated with these processes, DMG will require the <br /> issues listed in the attachment to be clarified. <br /> Two of the issues outlined in Mr. Posey's review require further comment. It is unclear from the description of the <br /> samples tested whether the"rinsed residue" is obtained from LOC-treated or untreated ore. This significantly <br /> affects the interpretation of the test results, so a specific explanation of how the samples were obtained is necessary. <br /> Second,while DMG is not disagreeing with these test results at this time,we feel that further explanation of all <br /> listed issues must be submitted prior to our office making any comment on how adding the processes so far <br /> described will effect the existing permit or reclamation bond. This review of the submitted tests is being done <br /> simply to determine if they would be applicable to the circumstances cited. Before any backfilling of the site <br /> occurs,a revision to the permit,which would include the complete testing procedures, must be submitted to DMG. <br /> If you have any further questions,please contact me at(303)866-3567. <br /> Sincerely, [ <br /> Christina L. Kamnikar <br /> Environmental Protection Specialist <br /> ATTACHMENT <br /> CC: H. Bruce Humphries <br /> Carl B. Mount <br /> Harry H. Posey <br /> Michael 1. Collins, Mining& Minerals. Ltd. <br />